| Parameter |
Value |
| Designation |
P/2010 H5 (Scotti) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2010-04-17T17:01:04.771200Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:42Z |
| Obs used |
67 |
| NEO |
- |
| M1 |
9.600 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2010-05-23.0000000 |
| e |
0.15644880 |
| q (au) |
6.025951 |
| a (au) |
7.143551 |
| i (deg) |
14.087184 |
| Ω (om, deg) |
24.899476 |
| ω (w, deg) |
175.129940 |
| M (ma, deg) |
1.821779 |
Magnitude
Scatter + Global Linear
$$
M_a = (8.141 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
8.141 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.689 |
| k |
0.800 |
| δ90 |
10.000 |
| Parameter |
Symbol |
Range |
Description |
| Absolute magnitude at 1 AU from Sun and Earth |
H0 |
-5 to 20 |
Intrinsic brightness of the comet |
| Photometric slope parameter |
n |
2 to 6 |
Rate of brightness change with heliocentric distance |
| Forward scattering asymmetry factor |
gf |
0.8 to 1 |
Degree of forward scattering |
| Backward scattering asymmetry factor |
gb |
-1 to -0.5 |
Degree of backward scattering |
| Partitioning coefficient |
k |
0.8 to 1 |
Ratio between forward/backward scattering contributions |
| Dust-to-gas brightness ratio |
δ90 |
1 to 10 |
Relative contribution of dust scattering to gas emission |
Reference: EPSC-DPS2025-160
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
08:14:32.36 |
+33:18:53.7 |
HIP 40384 |
8.37 |
| 2026-05-12 12:00 |
08:14:46.19 |
+33:17:17.1 |
HIP 40384 |
6.67 |
| 2026-05-13 00:00 |
08:15:00.14 |
+33:15:40.3 |
HIP 40384 |
6.40 |
| 2026-05-13 12:00 |
08:15:14.21 |
+33:14:03.4 |
HIP 40384 |
7.75 |
| 2026-05-14 00:00 |
08:15:28.41 |
+33:12:26.3 |
HIP 40384 |
10.12 |
| 2026-05-14 12:00 |
08:15:42.72 |
+33:10:49.0 |
HIP 40384 |
12.96 |
| 2026-05-15 00:00 |
08:15:57.15 |
+33:09:11.6 |
HIP 40384 |
16.06 |
| 2026-05-15 12:00 |
08:16:11.69 |
+33:07:33.9 |
HIP 40384 |
19.29 |
| 2026-05-16 00:00 |
08:16:26.35 |
+33:05:56.2 |
HIP 40384 |
22.62 |
| 2026-05-16 12:00 |
08:16:41.13 |
+33:04:18.2 |
HIP 40384 |
26.00 |
| 2026-05-17 00:00 |
08:16:56.02 |
+33:02:40.1 |
HIP 40716 |
28.19 |
| 2026-05-17 12:00 |
08:17:11.02 |
+33:01:01.9 |
HIP 40716 |
26.94 |
| 2026-05-18 00:00 |
08:17:26.14 |
+32:59:23.5 |
HIP 40716 |
26.10 |
| 2026-05-18 12:00 |
08:17:41.37 |
+32:57:44.9 |
HIP 40716 |
25.72 |
| 2026-05-19 00:00 |
08:17:56.71 |
+32:56:06.2 |
HIP 40716 |
25.83 |
| 2026-05-19 12:00 |
08:18:12.16 |
+32:54:27.3 |
HIP 40716 |
26.43 |
| 2026-05-20 00:00 |
08:18:27.71 |
+32:52:48.3 |
HIP 40782 |
26.00 |
| 2026-05-20 12:00 |
08:18:43.38 |
+32:51:09.2 |
HIP 40782 |
23.09 |
| 2026-05-21 00:00 |
08:18:59.15 |
+32:49:29.9 |
HIP 40782 |
20.42 |
| 2026-05-21 12:00 |
08:19:15.02 |
+32:47:50.5 |
HIP 40782 |
18.12 |
| 2026-05-22 00:00 |
08:19:31.01 |
+32:46:10.9 |
HIP 40782 |
16.36 |
| 2026-05-22 12:00 |
08:19:47.09 |
+32:44:31.2 |
HIP 40782 |
15.33 |
| 2026-05-23 00:00 |
08:20:03.28 |
+32:42:51.4 |
HIP 40782 |
15.21 |
| 2026-05-23 12:00 |
08:20:19.57 |
+32:41:11.4 |
HIP 40782 |
16.03 |
| 2026-05-24 00:00 |
08:20:35.96 |
+32:39:31.3 |
HIP 40891 |
15.82 |
| 2026-05-24 12:00 |
08:20:52.45 |
+32:37:51.1 |
HIP 40891 |
14.32 |
| 2026-05-25 00:00 |
08:21:09.04 |
+32:36:10.7 |
HIP 40891 |
13.77 |
| 2026-05-25 12:00 |
08:21:25.73 |
+32:34:30.3 |
HIP 40891 |
14.30 |
| 2026-05-26 00:00 |
08:21:42.51 |
+32:32:49.7 |
HIP 40891 |
15.82 |
| 2026-05-26 12:00 |
08:21:59.39 |
+32:31:08.9 |
HIP 40891 |
18.10 |
| 2026-05-27 00:00 |
08:22:16.37 |
+32:29:28.1 |
HIP 40891 |
20.90 |
| 2026-05-27 12:00 |
08:22:33.44 |
+32:27:47.1 |
HIP 41159 |
19.47 |
| 2026-05-28 00:00 |
08:22:50.61 |
+32:26:06.0 |
HIP 41159 |
15.51 |
| 2026-05-28 12:00 |
08:23:07.86 |
+32:24:24.9 |
HIP 41159 |
11.55 |
| 2026-05-29 00:00 |
08:23:25.21 |
+32:22:43.5 |
HIP 41159 |
7.63 |
| 2026-05-29 12:00 |
08:23:42.66 |
+32:21:02.1 |
HIP 41159 |
3.96 |
| 2026-05-30 00:00 |
08:24:00.19 |
+32:19:20.6 |
HIP 41159 |
2.44 |
| 2026-05-30 12:00 |
08:24:17.81 |
+32:17:38.9 |
HIP 41159 |
5.45 |
| 2026-05-31 00:00 |
08:24:35.52 |
+32:15:57.1 |
HIP 41248 |
4.44 |
| 2026-05-31 12:00 |
08:24:53.32 |
+32:14:15.3 |
HIP 41248 |
1.27 |
| 2026-06-01 00:00 |
08:25:11.21 |
+32:12:33.3 |
HIP 41248 |
4.21 |
| 2026-06-01 12:00 |
08:25:29.19 |
+32:10:51.2 |
HIP 41248 |
8.28 |
| 2026-06-02 00:00 |
08:25:47.25 |
+32:09:09.0 |
HIP 41248 |
12.43 |